let stats = {
    hash: '513c24c4ef047c5a78ed',
    version: '5.31.0',///webpack版本
    time: 124,//花费的时间
    builtAt: 1617974178827,//构建时的时间戳
    publicPath: 'auto',
    outputPath: 'c:\\aproject\\zhufengewebpack202004\\4.flow\\dist',//输出目录
    assetsByChunkName: { main: [ 'main.js' ] },//key代码块的名字，值是产出的文件资源
    assets: [//产出的资源文件
      {
        type: 'asset',
        name: 'main.js'
      }
    ],
    chunks: [//代码块
      {
        rendered: true,
        initial: true,
        entry: true,
        recorded: false,
        reason: undefined,
        size: 1,
        names: [Array],
        idHints: [],
        runtime: [Array],
        files: ['main.js'],//这个chunk产出了哪些文件
        auxiliaryFiles: [],
        hash: 'f76e7915507274961b26',//chunkHash 
        id: 'main',
        siblings: [],
        parents: [],
        children: [],
        origins: [Array]
      }
    ],
    modules: [//模块
      {
        type: 'module',
        moduleType: 'javascript/auto',//webpack从4开始对模块进行细分
        layer: null,
        size: 1,
        sizes: [Object],
        built: true,
        codeGenerated: true,
        cached: false,
        identifier: 'c:\\aproject\\zhufengewebpack202004\\4.flow\\src\\index.js',
        name: './src/index.js',
        nameForCondition: 'c:\\aproject\\zhufengewebpack202004\\4.flow\\src\\index.js',
        index: 0,
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        index2: 0,
        postOrderIndex: 0,
        cacheable: true,
        optional: false,
        orphan: false,
        dependent: undefined,
        issuer: null,
        issuerName: null,
        issuerPath: null,
        failed: false,
        errors: 0,
        warnings: 0,
        id: './src/index.js',//模块ID。其实就是相对于根目录的相对路径
        issuerId: null,
        chunks: ['main'],
        assets: [],
        reasons: [Array],
        usedExports: null,
        providedExports: null,
        optimizationBailout: [],
        depth: 0
      }
    ],
    filteredModules: undefined,
    entrypoints:{//入口点
      main: {
        name: 'main',
        chunks: [Array],
        assets: [Array],
        filteredAssets: 0,
        assetsSize: 1205,
        auxiliaryAssets: [],
        filteredAuxiliaryAssets: 0,
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    warnings: [],
    warningsCount: 0,
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